Description
Stack-based buffer overflow in the send_mailslot function in nmbd in Samba 3.0.0 through 3.0.27a, when the "domain logons" option is enabled, allows remote attackers to execute arbitrary code via a GETDC mailslot request composed of a long GETDC string following an offset username in a SAMLOGON logon request.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | samba | 3.0.28-1 | — |
| Debian 13 | samba | 3.0.28-1 | — |
| Debian 12 | samba | 3.0.28-1 | — |
| Debian 5.0 | samba | 3.0.28-1~lenny1 | DTSA-100-1 |
| Debian 4.0 | samba | 3.0.24-6etch9 | DSA-1427-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | samba | 3.0.14a-3sarge11 | DSA-1427-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | samba +3 | 3.0.25b-1.el5_1.4 | RHSA-2007:1114 |
| RHEL 4 | samba +3 | 3.0.25b-1.el4_6.4 | RHSA-2007:1114 |
| RHEL 3 | samba +3 | 3.0.9-1.3E.14.3 | RHSA-2007:1114 |
| RHEL 2 | samba +3 | 2.2.12-1.21as.8.2 | RHSA-2007:1114 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4.5 EUS | samba +3 | 3.0.10-2.el4_5.2 | RHSA-2007:1117, RHSA-2007:1114 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | cifs-utils | 6.13-1.3 | openSUSE-SU-2024:10683-1 |
| openSUSE Tumbleweed | samba | 4.14.6+git.182.2205d5224e3-1.1 | openSUSE-SU-2024:11365-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Samba 3.0.27a - 'send_mailslot()' Remote Buffer Overflow EDB-4732 · dos · Dec 14, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 6
- RHSA-2007:1117 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:1114 Red Hat Security Advisory: samba security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DTSA-100-1 samba - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1427-1 samba - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11365-1 ctdb-4.14.6+git.182.2205d5224e3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10683-1 cifs-utils-6.13-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- RHSA-2007:1117 vendor-advisory
- http://docs.info.apple.com/article.html?artnum=307430
- [Security-announce] 20080221 VMSA-2008-0003 Moderate: Updated aacraid driver and samba and python service console updates mailing-list
- 28891 third-party-advisory
- 1019295 vendor-advisory
- 30835 third-party-advisory
- 29341 third-party-advisory
- HPSBUX02316 vendor-advisory
- VU#438395 third-party-advisory
- 26791 vdb-entry
- 238251 vendor-advisory
- SUSE-SA:2007:068 vendor-advisory
- USN-556-1 vendor-advisory
- ADV-2008-1908 vdb-entry
- ADV-2008-0495 vdb-entry
- HPSBUX02341 vendor-advisory
- 27999 third-party-advisory
- 20071214 POC for samba send_mailslot() mailing-list
- 30484 third-party-advisory
- 29032 third-party-advisory
- http://www.samba.org/samba/security/CVE-2007-6015.html
- 27993 third-party-advisory
- samba-sendmailslot-bo(38965) vdb-entry
- DSA-1427 vendor-advisory
- 20080221 VMSA-2008-0003 Moderate: Updated aacraid driver and samba and python service console updates mailing-list
- MDKSA-2007:244 vendor-advisory
- http://bugs.gentoo.org/show_bug.cgi?id=200773
- 20071210 Secunia Research: Samba "send_mailslot()" Buffer OverflowVulnerability mailing-list
- 1019065 vdb-entry
- 27977 third-party-advisory
- ADV-2008-0637 vdb-entry
- 28029 third-party-advisory
- ADV-2007-4153 vdb-entry
- http://support.avaya.com/elmodocs2/security/ASA-2007-520.htm
- 28089 third-party-advisory
- 28003 third-party-advisory
- https://issues.rpath.com/browse/RPL-1976
- TA08-043B third-party-advisory
- RHSA-2007:1114 vendor-advisory
- 3438 third-party-advisory
- SSA:2007-344-01 vendor-advisory
- FEDORA-2007-4269 vendor-advisory
- FEDORA-2007-4275 vendor-advisory
- 27894 third-party-advisory
- APPLE-SA-2008-02-11 vendor-advisory
- 27760 third-party-advisory
- ADV-2008-1712 vdb-entry
- http://secunia.com/secunia_research/2007-99/advisory/
- 28067 third-party-advisory
- 28037 third-party-advisory
- ADV-2008-0859 vdb-entry
- 20071210 [SECURITY] Buffer overrun in send_mailslot() mailing-list
- 20071210 rPSA-2007-0261-1 samba samba-swat mailing-list
- oval:org.mitre.oval:def:11572 vdb-entry signature
- 28028 third-party-advisory
- oval:org.mitre.oval:def:5605 vdb-entry signature
- GLSA-200712-10 vendor-advisory